A method for obtaining a product by electrolysis, including: a) determining a set point for a production output by minimizing a first mathematical function, which depends on the production output and on a predicted product demand; b) determining respective set points for multiple process parameters by minimizing a second mathematical function, which depends on the set point for the production output determined in a), on the process parameters and on predicted degradation effects; c) determining respective set points for changes of multiple control parameters by minimizing a third mathematical function, which depends on the set points for the process parameters determined in b) and on the changes of the control parameters; and d) obtaining the product by performing the electrolysis using the set points for the changes of the control parameters determined in c).

A controller and an operation control method for electrolysis stack module powered by a renewable energy power generation device and an electrolysis system using the same, the controller being configured to control power supply by receiving the power supply from a renewable energy generator and distributing the power supply to n (n≥2) electrolysis stacks, wherein, the controller is configured to determine whether or not to drive each electrolysis stack according to stack driving conditions, no less than two, determined on the basis of a preset minimum amount of operating power supply for each electrolysis stack, and the stack driving conditions are ranges of an amount of the power supply in which on/off of the electrolysis stacks is predetermined, and the controller is configured to control driving of the electrolysis stacks according to the stack driving conditions corresponding to the amount of supplied power from the renewable energy generator.

A controller and an operation control method for electrolysis stack module powered by a renewable energy power generation device and an electrolysis system using the same, the controller being configured to control power supply by receiving the power supply from a renewable energy generator and distributing the power supply to n (n≥2) electrolysis stacks, wherein, the controller is configured to determine whether or not to drive each electrolysis stack according to stack driving conditions, no less than two, determined on the basis of a preset minimum amount of operating power supply for each electrolysis stack, and the stack driving conditions are ranges of an amount of the power supply in which on/off of the electrolysis stacks is predetermined, and the controller is configured to control driving of the electrolysis stacks according to the stack driving conditions corresponding to the amount of supplied power from the renewable energy generator.

Disclosed are a system and method for managing a self-contained hydrogen power system for a smart farm. The system may include a self-contained hydrogen generation unit configured to purify intake-water, generate clean hydrogen through water electrolysis, generate energy through a fuel cell by using the generated clean hydrogen, and store the energy, and a farm environment control unit configured to receive, from the self-contained hydrogen generation unit, energy for driving a plurality of sensors and devices for producing aquatic products and control an environment for producing aquatic products.

The present invention provides a gas generator and comprises an electrolytic cell, a condensate filter device, and an atomizing device. The electrolytic cell is for electrolyzing electrolyzed water to generate a gas with hydrogen. The condensate filter device includes a gas pathway, a filter, and an isolated component. The isolated component is used for limiting the movement of the filter inside the gas pathway. The gas generated from the electrolytic cell is condensed and filtered through the filter for generating a filtered gas with hydrogen. The atomizing device is used for generating an atomizing gas to be mixed with the filtered gas to generate a healthy gas. The present invention uses the condensate filter device to filter out the electrolyte from the filtered gas with hydrogen to be mixed with the atomizing gas for generating the healthy gas.

The present invention provides a methanol generation device for generating methanol by reducing carbon dioxide, comprising: a container for storing an electrolyte solution containing carbon dioxide; a cathode electrode disposed in the container so as to be in contact with the electrolyte solution; an anode electrode disposed in the container so as to be in contact with the electrolyte solution; and an external power supply for applying a voltage so that a potential of the cathode electrode is negative with respect to a potential of the anode electrode. The cathode electrode has a region of Cu.sub.1-x-yNi.sub.xAu.sub.y (0<x, 0<y, and x+y<1). The anode electrode has a region of a metal or a metal compound.

The present invention provides a methanol generation device for generating methanol by reducing carbon dioxide, comprising: a container for storing an electrolyte solution containing carbon dioxide; a cathode electrode disposed in the container so as to be in contact with the electrolyte solution; an anode electrode disposed in the container so as to be in contact with the electrolyte solution; and an external power supply for applying a voltage so that a potential of the cathode electrode is negative with respect to a potential of the anode electrode. The cathode electrode has a region of Cu.sub.1-x-yNi.sub.xAu.sub.y (0<x, 0<y, and x+y<1). The anode electrode has a region of a metal or a metal compound.

A controller according to an embodiment controls a hydrogen system including at least a hydrogen production system in which received power is planned in advance and a hydrogen production amount changes in accordance with the received power. The controller includes: a processor that calculates, in a preparation time period before a demand adjustment time period in which a target value of the received power is set in advance, a control command value such that input power to be inputted as the received power to the hydrogen production system matches the target value at a start of the demand adjustment time period; and a command controller that outputs the control command value calculated by the processor to the hydrogen production system.

An electrolysis device may include a housing having a cavity that is configured to receive a precursor solution. The precursor solution may include chloride. An electrolysis circuit may be located in the cavity of the housing. The electrolysis circuit may include a power source, a first electrode and a second electrode electrically coupled to the power source, and a control circuit electrically coupled to the power source and the first and second electrodes. Upon the control circuit being activated while the precursor liquid operably couples the first and second electrodes together, the electrolysis circuit may be configured to generate a hypochlorite solution from the precursor solution.

An electrolysis device may include a housing having a cavity that is configured to receive a precursor solution. The precursor solution may include chloride. An electrolysis circuit may be located in the cavity of the housing. The electrolysis circuit may include a power source, a first electrode and a second electrode electrically coupled to the power source, and a control circuit electrically coupled to the power source and the first and second electrodes. Upon the control circuit being activated while the precursor liquid operably couples the first and second electrodes together, the electrolysis circuit may be configured to generate a hypochlorite solution from the precursor solution.